I don't know when this silly feature was added, because I skipped 4 recent weeklies, but now that I installed 6.5.5, this thing came up and annoys me greatly.
The telephone app now frequently pops up the following notification:
Looks like roaming is activated... You can add country codes automatically...
There are a number of problems with this:
In some countries, national roaming is used a lot. This happens when a provider takes over another one. Then, their customers automatically roam between the two networks for optimum signal strength. There is no need to add country codes with this type of roaming, but my phone keeps pestering me with that notification all the time.
For some reason the phone app does not appear in notifications settings, so I can't suppress this message.
So why not just activate the automatic addition of country codes, just to get rid of that notification?
The automatic addition of country codes, if activated, will break the ability to use SSI codes in your contacts. For instance, I have a contact named balance that dials *100# to display my prepaid balance. This is no longer possible, because the phone adds a country code which renders the SSI code invalid.
I think Xiaomi all too often adds features to Miui without providing a way to opt out.
The search bar notification is one of these. The music widget on the lockscreen is another one. Now this.